ᐅ Tilt-and-Parallel-Projection Windows

Hello everyone,

Next week we will start building our new KfW 70 house without a mechanical ventilation system. Why without? It’s better to leave that decision to us! A window manufacturer mentioned a window with a parallel ventilation position. At first, we were quite excited about it. But now we are wondering if this 6mm (0.24 inches) gap really makes a difference if the window is left like that all day—does it actually provide effective air exchange?

Perhaps someone already has experience with this.

Best regards

Partyhupe schrieb:

Why without? It’s better to let us decide!

A good start, receiving many responses

Regards, Bauexperte

...and what is the purpose of the parallel connection?

To continuously let the warmed air out of the house, even when away, so that the heating system must run constantly?

asks Yvonne

No, according to the promotional video, only the stale air goes out, but the heat stays inside.

Parallel is probably the modern tilt – which makes no sense.

I think tilting windows in spring, summer, and autumn is fine—as long as the heating is turned off, of course.